Microsoft SharePoint Server Remote Code Execution Vulnerability

The Microsoft SharePoint Server 2013 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2021-43242)

  - A remote code execution vulnerability. An attacker can     exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-42294,     CVE-2021-42309)

The Microsoft SharePoint Server Subscription Edition installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2021-42320, CVE-2021-43242)

  - A remote code execution vulnerability. An attacker can     exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-42294,     CVE-2021-42309)

The Microsoft SharePoint Server 2019 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2021-42320, CVE-2021-43242)

  - A remote code execution vulnerability. An attacker can     exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-42294,     CVE-2021-42309)

The Microsoft SharePoint Server 2016 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - A session spoofing vulnerability exists. An attacker can     exploit this to perform actions with the privileges of     another user. (CVE-2021-42320, CVE-2021-43242)

  - A remote code execution vulnerability. An attacker can     exploit this to bypass authentication and execute     unauthorized arbitrary commands. (CVE-2021-42294,     CVE-2021-42309)

ID	Name	Product	Family	Severity
158167	Security Updates for Microsoft SharePoint Server 2013 (December 2021)	Nessus	Windows : Microsoft Bulletins	high
158166	Security Updates for Microsoft SharePoint Server Subscription Edition (December 2021)	Nessus	Windows : Microsoft Bulletins	high
158165	Security Updates for Microsoft SharePoint Server 2019 (December 2021)	Nessus	Windows : Microsoft Bulletins	high
158164	Security Updates for Microsoft SharePoint Server 2016 (December 2021)	Nessus	Windows : Microsoft Bulletins	high

Detections

Analytics

CVE-2021-42294

high

Tenable Plugins

high

high

high

high